Footwear tread pattern



FIG. 1 is a bottom perspective view of a footwear tread pattern showing my new design on a slipper;

FIG. 2 is a bottom plan view of the tread design;

FIG. 3 is a side view of one side of the tread design, the other side being a mirror image thereof;

FIG. 4 is an end view of the toe end of the tread design; and

FIG. 5 is an end view of the heel end of the tread design. 

The ornamental design for a footwear tread pattern, as shown and described. 